Changing watermark settings does not work retroactive, watermark settings apply to new images only.

Saving image module settings "breaks" watermark settings, even if you did not change anything. That means watermarks disappear or apply to all image sizes, when the node or gallery is viewed.

Requirements

This module requires no patches to Drupal nor image module.

It does require the PHP GD library to be configured by your host.

GD is enabled by default in PHP 4.3 and later, and can be added to earlier version if compiled in them. For more information see http://php.net/image

The module was tested with with PHP 4.4.0 and PHP 5.1.2, but should work with other versions that had GD.

Usage

Extract the watermark module directory with all subdirectories and files into your modules directory. Enable the module on the admin/build/modules page. Then navigate to admin/settings/image_watermark to enable watermark processing for new image uploads.